US6485087B1 - Air drag reducing apparatus - Google Patents
Air drag reducing apparatus Download PDFInfo
- Publication number
- US6485087B1 US6485087B1 US09/990,494 US99049401A US6485087B1 US 6485087 B1 US6485087 B1 US 6485087B1 US 99049401 A US99049401 A US 99049401A US 6485087 B1 US6485087 B1 US 6485087B1
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- US
- United States
- Prior art keywords
- panels
- vehicle
- drag reducing
- door
- air drag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/001—For commercial vehicles or tractor-trailer combinations, e.g. caravans
Definitions
- the present invention relates to an air drag reducing apparatus for use with vehicles having a rectangular rear end closed by a pair of hingedly mounted doors.
- the present invention is concerned with providing an air drag reducing apparatus which overcomes the above-described problems.
- this is achieved by providing an apparatus which allows the panels to be moved outwardly from a drag reducing position to a position where the doors are in their fully retracted position adjacent their associated sides of the vehicle.
- a further object of the present invention is to provide a mechanism which will enable the panels to return back to their drag reducing position whenever the doors are hingedly moved from their retracted position to their end closing position. This is achieved by providing a pressure exerting element which assists the panel to return to its drag reducing position.
- the present invention therefore relates to an air drag reducing apparatus for use with a vehicle having a top and opposite lateral sides contiguous with a rear end formed of a pair of hingedly mounted rectangular doors movable between a closed position to a fully open retracted position wherein the doors panels are respectively retracted adjacent to a corresponding side of the vehicle; the apparatus comprising:
- a pair of elongated generally rectangular side panels each having opposite short sides and opposite long sides, the long sides defining a leading edge and a trailing edge;
- hinge means connecting each side panel allowing for pivotal movement relative to a corresponding door of the vehicle
- each side panel for maintaining the side panel in a drag reducing position rearwardly of a corresponding closed door wherein the side panel defines an angle of about 16° with a rearward projection of a plane of the corresponding side of the vehicle;
- top panels each having opposite short sides and opposite long sides, the long sides defining a leading edge and a trailing edge; the short sides of the top panels including one short side disposed adjacent an inner face of a corresponding one of the side panels when the side panels are in the drag reducing position;
- each top panel defines an angle of about 16° with a rearward projection of a plane of the top of the vehicle; the maintaining means associated with the top panels allowing the top panels to be moved from the drag reducing position to a position lying substantially parallel to a corresponding side of the vehicle between a corresponding side panel and a corresponding door in the fully open position.
- one short side of the top panels includes means that slidably contact the inner face of the side panels as the vehicle doors are opened.
- the positioning means consist of gas cylinders connected between the door and the top panel.
- FIG. 1 is a perspective view showing the rear of a vehicle equipped with a series of air drag apparatuses made in accordance with the present invention
- FIG. 1 a is an enlarged perspective view of the hinge arrangement of the trailer door and side panel
- FIG. 2 is an elevational rear view of the vehicle and its panels
- FIG. 3 is an elevational side view of the rear of the vehicle showing one side panel and one top panel;
- FIG. 4 is a top plan view of the rear of the vehicle and its panels
- FIG. 5 is an elevational side view of the rear of the vehicle with one side panel removed for clarity purposes;
- FIG. 5 a is an enlarged perspective view of a cylinder arrangement used with the top panels of the invention.
- FIG. 6 is a top plan view showing a door with one side and one top panel in the opened position
- FIGS. 7 and 8 are top plan views showing various positions of the two doors and their top and side panels in a door returning motion
- FIG. 9 is an elevational view of a variant of a side panel of the present invention.
- FIG. 1 there is shown the rear end of a vehicle 10 , such as a truck or a trailer, which is closed by a pair of doors 12 and 14 of rectangular shape.
- the doors are respectively mounted by means of hinges 16 , 18 , 20 , 22 , 24 on one side and 26 , 28 , 30 , 32 and 34 on the other side so as to move from their shown closed position to a fully retracted position where they are disposed parallel and adjacent to the opposite sides 36 and 38 of the vehicle.
- the present invention is concerned with providing, at the rear of vehicle, an air drag reducing apparatus which in the present case includes a pair of side panels 40 and 42 and a pair of top panels 44 and 46 .
- Panel 40 has a generally elongated rectangular shape with a leading edge 48 and a trailing edge 50 (defining the long sides of the rectangle) and a pair of opposite sides 52 and 56 (defining the short sides of the rectangle).
- the side panel 42 has a leading edge 60 and a trailing edge 62 defining the long sides of the generally rectangular panel and opposite short sides 64 and 66 representing the short sides of the panel.
- These panels are preferably made of metal, such as aluminum; however, other material, such as plastic or fiberglass, may be used.
- the width of these panels is preferably of about twenty inches or more.
- FIG. 1 shows three hinges 76 , 78 , 80 fixed to the inner face of panel 42 and pivotally mounted on the door hinges 26 , 28 , 34 respectively.
- FIG. 1 a shows in greater detail that hinge 78 is connected to pin 73 mounted to a C-shaped bracket 81 which is fixedly secured to the rear frame 39 of the side 38 of the trailer. Hinge 28 is also mounted to the pin 73 to allow for the pivotal movement of the door 14 .
- a spacer 79 is provided between the hinge 78 and the panel 42 .
- One or more cables 110 are provided to retain the side panels 40 and 42 in their 16° angle; for example, referring to FIGS. 1 and 1 a , these cables 110 have one end 112 mounted to the hinge 28 and the opposite end 114 mounted to the trailing edge 62 of the side panel 42 .
- panels 40 and 42 are positioned in a preferred drag reducing position rearwardly of a corresponding closed panel at an angle of preferably about 16° with the rearward projection of the plane of the corresponding side of the vehicle; FIG. 3 shows this angle with respect to the top side 35 of the vehicle while FIG. 4 shows this angle with respect to the lateral side 36 of the vehicle.
- the top panel 44 has a generally rectangular shape with a leading edge 200 and a trailing edge 202 forming the long sides of the panel and a pair of short sides 204 and 206 .
- panel 46 has a rectangular shape with a leading edge 210 and a trailing edge 212 forming the long sides of the panel and a pair of opposite short sides 214 and 216 .
- these panels 44 and 46 are each pivotally mounted to their respective doors 12 and 14 by means of a pair of hinges 220 and 222 (for panel 44 ) and 224 and 226 (for panel 46 ).
- the air drag reducing apparatus of this embodiment of the present invention includes of a pair of gas (inert or air) cylinders 228 and 230 for panel 44 and a pair of gas (inert or air) cylinders 232 and 234 for panel 46 .
- a pair of gas (inert or air) cylinders 228 and 230 for panel 44 and a pair of gas (inert or air) cylinders 232 and 234 for panel 46 .
- one of the cylinder arrangements is shown in greater detail; it consists of a hinge 222 formed of two arms 222 a and 222 b respectively mounted to the trailer door 12 and the top panel 44 and pivotable about pin 223 .
- the cylinder 230 is pivotally connected, at each extremity, to the arms 222 a and 222 b . When arm 222 b is moved towards arm 222 a , the cylinder is compressed.
- each top panel includes a sliding element, such as roller 240 , 242 , which is adapted to contact the inner face of the side panels.
- the top panels swing outwardly with their respective door, the rollers 240 and 242 contacting the inner face of their corresponding side panels which pivot outwardly about their respective hinges.
- the continuing pivotal movement of the vehicle doors cause the rollers 240 and 242 to roll downward along the side panels while simultaneously causing the compressing of the gas cylinders 228 , 230 , 232 and 234 until the top panels lie vertically between the side panels (contacting the vehicle side) and the door in its fully retracted position lying substantially parallel to the vehicle side.
- securing means are provided on the doors to enable the doors to be secured in their fully retracted position.
- the side panel 40 ′ may be provided with a flexible member 300 made of rubber or like material along its leading edge.
- This member 300 serves to protect the leading edge when the door and side panel are moved to the outwardly fully retracted position where it is subject to damage as the trailer is moved rearwardly and impact on a solid wall as the like. It is therefore wished to have it understood that the present invention should not be limited in scope, except by the terms of the following claims.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/990,494 US6485087B1 (en) | 2001-11-16 | 2001-11-16 | Air drag reducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/990,494 US6485087B1 (en) | 2001-11-16 | 2001-11-16 | Air drag reducing apparatus |
Publications (1)
Publication Number | Publication Date |
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US6485087B1 true US6485087B1 (en) | 2002-11-26 |
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US09/990,494 Expired - Lifetime US6485087B1 (en) | 2001-11-16 | 2001-11-16 | Air drag reducing apparatus |
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Cited By (105)
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US6666498B1 (en) * | 2001-10-04 | 2003-12-23 | W. David Whitten | Deployable airfoil for trucks and trailers |
US6669270B1 (en) * | 2002-09-05 | 2003-12-30 | Loyd Ray Card | Truck wind deflector |
US20040056512A1 (en) * | 2002-09-20 | 2004-03-25 | The Regents Of The University Of California | Apparatus and method for reducing drag of a bluff body in ground effect using counter-rotating vortex pairs |
US20040118055A1 (en) * | 2002-12-19 | 2004-06-24 | James Reiman | Deployable structure |
US6799791B2 (en) * | 2002-12-19 | 2004-10-05 | Aerotail, Llc. | Deployable vehicle fairing structure |
US20040256884A1 (en) * | 2003-06-20 | 2004-12-23 | Schwartz Karl John | Aerodynamic underbody device for trailer (and box-truck) |
US6854788B1 (en) * | 2003-11-03 | 2005-02-15 | Freight Wing Inc. | Device for reducing vehicle aerodynamic resistance |
US20060252361A1 (en) * | 2005-05-09 | 2006-11-09 | Airman, Inc. | Aerodynamic truck trailer airflow control device |
US20070001481A1 (en) * | 2005-06-29 | 2007-01-04 | Breidenbach Thomas S | Aerodynamic drag reducing apparatus |
US20070024087A1 (en) * | 2005-07-27 | 2007-02-01 | Joseph Skopic | Apparatus for reducing drag on unpowered vehicles |
FR2889153A1 (en) | 2005-08-01 | 2007-02-02 | Fabrice Paille | Aerodynamic shell for load-handling equipment carried by freight vehicle is shaped to reduce drag without increasing permitted length of vehicle |
US20070029837A1 (en) * | 2005-08-03 | 2007-02-08 | Philip Vala | Vehicle drag reduction apparatus |
US20070046066A1 (en) * | 2005-08-23 | 2007-03-01 | Cosgrove William E | Aerodynamic drag reducing system with retrofittable, selectively removable frame |
US20070089531A1 (en) * | 2005-09-15 | 2007-04-26 | Wood Richard M | Wake stabilization device and method for reducing the aerodynamic drag of ground vehicles |
US20070126261A1 (en) * | 2005-12-01 | 2007-06-07 | Breidenbach Thomas S | Aerodynamic drag reducing apparatus |
US7234761B1 (en) * | 2003-06-30 | 2007-06-26 | Alfa Leisure, Inc. | Side mounted awning assembly for recreational vehicles |
US20070176465A1 (en) * | 2006-01-30 | 2007-08-02 | Solus Solutions And Technologies, Llc | Frame extension device for reducing the aerodynamic drag of ground vehicles |
US20070246969A1 (en) * | 2006-04-20 | 2007-10-25 | Freightliner Llc | Vehicle extender |
WO2008024386A2 (en) * | 2006-08-23 | 2008-02-28 | Robert Holubar | Air drag reduction appratus for tractor-trailers |
US20080093886A1 (en) * | 2006-10-19 | 2008-04-24 | Nusbaum Howard G | Retractable air deflection apparatus for reduction of vehicular air drag |
US20080116716A1 (en) * | 2006-11-21 | 2008-05-22 | Volare Airfoils, Llc | Air foil |
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US20080184835A1 (en) * | 2005-06-29 | 2008-08-07 | Thomas Scott Breidenbach | Linear-Curvilinear Actuating Apparatus with Rotating Joints |
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Cited By (201)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6666498B1 (en) * | 2001-10-04 | 2003-12-23 | W. David Whitten | Deployable airfoil for trucks and trailers |
US6669270B1 (en) * | 2002-09-05 | 2003-12-30 | Loyd Ray Card | Truck wind deflector |
US20040056512A1 (en) * | 2002-09-20 | 2004-03-25 | The Regents Of The University Of California | Apparatus and method for reducing drag of a bluff body in ground effect using counter-rotating vortex pairs |
US6926345B2 (en) * | 2002-09-20 | 2005-08-09 | The Regents Of The University Of California | Apparatus and method for reducing drag of a bluff body in ground effect using counter-rotating vortex pairs |
US20040118055A1 (en) * | 2002-12-19 | 2004-06-24 | James Reiman | Deployable structure |
US6799791B2 (en) * | 2002-12-19 | 2004-10-05 | Aerotail, Llc. | Deployable vehicle fairing structure |
US6915611B2 (en) * | 2002-12-19 | 2005-07-12 | Aerotail, Llc | Deployable structure |
US20040256884A1 (en) * | 2003-06-20 | 2004-12-23 | Schwartz Karl John | Aerodynamic underbody device for trailer (and box-truck) |
US6837536B1 (en) * | 2003-06-20 | 2005-01-04 | Karl John Schwartz | Aerodynamic underbody device for trailer (and box-truck) |
US7234761B1 (en) * | 2003-06-30 | 2007-06-26 | Alfa Leisure, Inc. | Side mounted awning assembly for recreational vehicles |
US6854788B1 (en) * | 2003-11-03 | 2005-02-15 | Freight Wing Inc. | Device for reducing vehicle aerodynamic resistance |
US20060252361A1 (en) * | 2005-05-09 | 2006-11-09 | Airman, Inc. | Aerodynamic truck trailer airflow control device |
US10370043B2 (en) | 2005-06-29 | 2019-08-06 | Thomas Scott Breidenbach | Aerodynamic drag reducing apparatus |
US8627738B2 (en) | 2005-06-29 | 2014-01-14 | Thomas Scott Breidenbach | Linear-curvilinear actuating apparatus with rotating joints |
US7380868B2 (en) | 2005-06-29 | 2008-06-03 | Thomas Scott Breidenbach | Aerodynamic drag reducing apparatus |
US8622461B2 (en) | 2005-06-29 | 2014-01-07 | Thomas Scott Breidenbach | Aerodynamic drag reducing apparatus |
US7784854B2 (en) | 2005-06-29 | 2010-08-31 | Thomas Scott Breidenbach | Aerodynamic drag reducing apparatus |
US20080184835A1 (en) * | 2005-06-29 | 2008-08-07 | Thomas Scott Breidenbach | Linear-Curvilinear Actuating Apparatus with Rotating Joints |
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